What does O2 stand for?
O2 stands for Oxygen.
O2 stands for Oxygen.
O2 stands for "oxygen." Oxygen is a chemical element that is essential for the survival of most living organisms. It is a colorless, odorless, and tasteless gas that makes up about 21% of Earth's atmosphere. Oxygen is also involved in various chemical and biological processes, such as respiration and combustion.
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